The electric ball valve of the valve is commonly known as the flexible electric ball valve. Its products are widely used in water, electricity, chemical industry, and ship mooring systems. Its main performance is high pressure resistance, good elasticity (axial and transverse angular displacement), noise reduction, light weight, vibration reduction, easy installation, flexible use, easy replacement and maintenance, and it is acid resistant, alkali resistant, oil resistant, and other characteristics. Pay attention to the following different requirements when using electric ball valves.
1. The appropriate model of electric ball valve must be selected according to the working pressure, connection mode, medium and compensation amount of the pipeline, and the number shall be selected according to the requirements of noise reduction displacement.
2. When the pipeline generates instantaneous pressure and is greater than the working pressure, the joint with one gear higher than the working pressure shall be selected. (For example, when the instantaneous pressure of pipeline startup is>1.0MPa, the connector with the working pressure of 1.6MPa should be selected. When the instantaneous pressure is>1.6MPa, the connector with the working pressure of 2.5MPa should be selected.).
3. When the pipeline medium is acid-base, oil, high temperature and other special materials, the joint with a gear higher than the working pressure of the pipeline shall be selected. 4. The flange connecting the electric ball valve of the valve shall be the valve flange or the flange conforming to GB/T9115.1 (RF).
5. The normal applicable medium of electric ball valve with flexible valve is ordinary water with a temperature of 0-60 ℃. For special media such as oil, acid and alkali, high temperature and other corrosive and hard conditions, the corresponding electric ball valve with special resistant material shall be selected. It is not allowed to be used in series or in general.
6. When the flexible valve electric ball valve is used at the inlet and outlet of the water pump, it shall be located at the side near the water pump, and a metal reducing joint shall be installed between it and the water pump, and it shall be installed at the large diameter of the reducing joint.
7. When the pipe displacement is equal to or greater than the maximum compensation amount of the joint, the number of joints shall be increased to parallel the displacement amount. It is strictly prohibited to adjust the out of tolerance of the pipe, so that the joint is in the state of extreme deflection displacement and deviation, and the out of tolerance (expansion, displacement, deflection, etc.) is not allowed.
8. For high-rise water supply or suspended water supply, the pipeline shall be fixed on the hanger, bracket or anchor bracket, and the joint shall not bear the weight and axial force of the pipeline itself, otherwise the joint shall be equipped with anti pulling device (the bearing force must be greater than the axial force of the pipeline).
9. When installing the electric ball valve of the valve, the screw rod of the bolt should extend to the outside of the joint, and the bolts on each flange end face should be repeatedly and evenly tightened by diagonal pressure to prevent pressure deviation. The screw connector shall be tightened evenly with a standard wrench. Do not use a force rod to force the union to slip wires, slip edges and fracture. And it shall be checked regularly to avoid loosening and causing disc falling or water seepage.
10. After the electric ball valve of the valve is subjected to pressure for the first time (such as installation and pressure test) or before it is used again after being stopped for a long time, the bolts shall be re pressurized and tightened before it is put into operation. 11. When the electric ball valve is installed on the ground, in the air and vertically, the actual working axial displacement pressure of the electric ball valve shall be less than the supporting force of the pipeline, otherwise the anti pull off device shall be installed to prevent the working pressure from pulling off.
12. When using or storing electric ball valves, avoid high temperature, ozone, oil, acid and alkali environment. The pipeline used outdoors or facing the sun and wind shall be provided with a sunshade, and it is strictly prohibited to expose to the sun, rain or wind. The joint surface shall not be painted or wrapped with insulation materials. Due to the aging of valve products, they should be checked and replaced in time.
13. Keep away from heat source and ozone area, and prohibit strong radiation light. Exposure and use of media that do not meet the requirements of this product.